Nearly 250 accidents were tallied by CHP on San Diego County's freeways and roads in unincorporated areas from midnight to 4 p.m., said CHP Officer Mary Bailey. When the weather is good, 50 to 75 crashes occur in a day in the region, the CHP said.

Bailey said commutes would be longer and the response time to crashes would also be strained.

“There might be delays in officers and tow trucks arriving because there are probably other active incidents,” she said.

Bailey said if you are involved in a collision and there are no injuries, try to get off the freeway as soon as possible if your vehicle is drivable and exchange insurance information.

She also said to watch your speed while heading home.

“Driving too fast is the No. 1 cause of collisions on a wet roadway,” Bailey said. “We always say to reduce your speed, increase your following distance and try not to make any sudden movements.”